import 'package:auto_route/auto_route.dart';
import 'package:flutter/material.dart';
import 'package:line_icons/line_icons.dart';

import '../../../common/theme/theme.dart';
import '../../components/button/button.dart';
import '../../components/spacer/spacer.dart';
import 'widgets/activity.dart';
import 'widgets/feature.dart';
import 'widgets/header.dart';
import 'widgets/performance.dart';
import 'widgets/stats.dart';
import 'widgets/task.dart';

@RoutePage()
class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> with TickerProviderStateMixin {
  late ScrollController _scrollController;
  late AnimationController _headerAnimationController;
  late AnimationController _contentAnimationController;
  late AnimationController _appBarAnimationController;

  late Animation<double> _appBarOpacityAnimation;
  late Animation<Offset> _appBarSlideAnimation;

  bool _showAppBar = false;

  @override
  void initState() {
    super.initState();
    _scrollController = ScrollController();
    _scrollController.addListener(_scrollListener);

    _headerAnimationController = AnimationController(
      duration: const Duration(milliseconds: 800),
      vsync: this,
    );

    _contentAnimationController = AnimationController(
      duration: const Duration(milliseconds: 1200),
      vsync: this,
    );

    // AppBar Animation Controller
    _appBarAnimationController = AnimationController(
      duration: const Duration(milliseconds: 300),
      vsync: this,
    );

    // AppBar Animations
    _appBarOpacityAnimation = Tween<double>(begin: 0.0, end: 1.0).animate(
      CurvedAnimation(
        parent: _appBarAnimationController,
        curve: Curves.easeInOut,
      ),
    );

    _appBarSlideAnimation =
        Tween<Offset>(begin: const Offset(0.0, -1.0), end: Offset.zero).animate(
          CurvedAnimation(
            parent: _appBarAnimationController,
            curve: Curves.easeOutCubic,
          ),
        );

    _startAnimations();
  }

  void _startAnimations() {
    _headerAnimationController.forward();
    Future.delayed(const Duration(milliseconds: 200), () {
      _contentAnimationController.forward();
    });
  }

  void _scrollListener() {
    const double threshold = 200.0;

    if (_scrollController.offset > threshold && !_showAppBar) {
      setState(() {
        _showAppBar = true;
      });
      _appBarAnimationController.forward();
    } else if (_scrollController.offset <= threshold && _showAppBar) {
      _appBarAnimationController.reverse().then((_) {
        if (mounted) {
          setState(() {
            _showAppBar = false;
          });
        }
      });
    }
  }

  @override
  void dispose() {
    _scrollController.removeListener(_scrollListener);
    _scrollController.dispose();
    _headerAnimationController.dispose();
    _contentAnimationController.dispose();
    _appBarAnimationController.dispose();
    super.dispose();
  }

  PreferredSizeWidget? _buildAnimatedAppBar() {
    if (!_showAppBar) return null;

    return PreferredSize(
      preferredSize: const Size.fromHeight(kToolbarHeight),
      child: SlideTransition(
        position: _appBarSlideAnimation,
        child: FadeTransition(
          opacity: _appBarOpacityAnimation,
          child: AppBar(
            title: const Text(
              'AppSkel POS Owner',
              style: TextStyle(
                fontWeight: FontWeight.w700,
                fontSize: 18,
                letterSpacing: -0.5,
              ),
            ),
            foregroundColor: AppColor.textPrimary,
            elevation: 0,
            scrolledUnderElevation: 0,
            shadowColor: AppColor.primary.withOpacity(0.1),
            actions: [ActionIconButton(onTap: () {}, icon: LineIcons.bell)],
          ),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: AppColor.background,
      appBar: _buildAnimatedAppBar(),
      body: CustomScrollView(
        controller: _scrollController,
        physics: const BouncingScrollPhysics(),
        slivers: [
          // Enhanced Header
          SliverToBoxAdapter(
            child: AnimatedBuilder(
              animation: _headerAnimationController,
              builder: (context, child) {
                return Transform.translate(
                  offset: Offset(
                    0,
                    50 * (1 - _headerAnimationController.value),
                  ),
                  child: Opacity(
                    opacity: _headerAnimationController.value,
                    child: HomeHeader(),
                  ),
                );
              },
            ),
          ),

          // Main Content
          SliverToBoxAdapter(
            child: AnimatedBuilder(
              animation: _contentAnimationController,
              builder: (context, child) {
                return Transform.translate(
                  offset: Offset(
                    0,
                    30 * (1 - _contentAnimationController.value),
                  ),
                  child: Opacity(
                    opacity: _contentAnimationController.value,
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        HomeFeature(),
                        HomeStats(),
                        HomeTask(),
                        HomeActivity(),
                        HomePerformance(),
                        const SpaceHeight(40),
                      ],
                    ),
                  ),
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}